10 Important Characteristics of Cyclostomata

10 Important Characteristics of Cyclostomata are given below:

1) They have cartilaginous skulls and tooth-like structures composed of keratin.

2) Hagfish have no true fins and have six or eight barbels around the mouth and a single nostril.

3) Hagfish eyespots when present can detect light, but as far as is known none can resolve detailed images.

4) Some hagfish species are thought to be hermaphroditic, having both an ovary and a testicle.

5) True jaws are absent.

6) Paired fines are absent.

7) the nostril is single and median.

8) Notochord present through life.

10) heart is two chambered.

Example:

1. Petromyzon

2. Maxine